Assuming very dilute aqueous solution of urea, calculate the vapour pressure of solution (in mm of Hg) of 0.1 moles of urea in 180 grams of water at 25 o C is (The vapour pressure of water at 25 o C i

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Assuming very dilute aqueous solution of urea, calculate the vapour pressure of solution (in mm of Hg) of 0.1 moles of urea in 180 grams of water at 25 o C is (The vapour pressure of water at 25 o C is 24 mm Hg)

TestHub · Accepted Answer

From Raoult's law for very dilute solution. p o - p s p o = w m × M W 24 - p s 24 = 0.1 × 18 180 24 - p s = 0.24 ∴ p s = 24 - 0.24 = 23.76 m m H g

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